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The ability to understand natural language queries is a big deal. Alongside tents and drinking water, RAF planes dropped more than 1,000 solar-powered lanterns attached to chargers for all types of mobile handsets to the stranded members of the Yazidi religious community below. It is the first time the lanterns have been airdropped in such a relief effort, but humanitarian workers say it is part of growing efforts to develop technology designed to make a difference in disaster zones. In a year when the world often seemed impossible to understand, this torrent of discoveries reminds us that there are people who strive every day to help us make sense of its enormous complexity. And thankfully, they will never stop striving no matter what obstacles – political, financial or even wayward predatory mammals – stand in their way.

Print isn’t dead. As well as the weekly magazine, we also produced five issues of New Scientist: The Collection and two acclaimed books: How Long is Now?, our latest compendium of Last Word answers, and the lavishly illustrated The Origin of (almost) Everything. A big problem in solar power is ...
... that sunlight is not constant: because of seasonal changes, night-time and clouds, the amount of sunlight that reaches panels is constantly shifting. This means we must regulate the power from the cells so that the grid doesn’t fry on sunny days and the lights don’t flicker as clouds pass. Trouble is, this dents the efficiency of the panels.

It won’t be plain sailing, though. Scaling up will mean creating magnetic fields that vary in strength over relatively short distances. This a significant engineering challenge, says Mukherjee. Then there’s the challenge of handling waste heat, which becomes more problematic as the processor gets bigger. “As with any architecture, you need low heating rates,” he says.